fec: Add support to restart autonegotiate

Add ethtool operation to restart autonegotiation via the PHY.

Tested on i.MX28EVK.

Signed-off-by: Chris Healy <cphealy@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 12 insertions, 0 deletions

diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c
index c540055e4f4f..46f2544fd1a7 100644
--- a/drivers/net/ethernet/freescale/fec_main.c
+++ b/drivers/net/ethernet/freescale/fec_main.c
@@ -1435,6 +1435,17 @@ static int fec_enet_set_pauseparam(struct net_device *ndev,
         return 0;
 }
 
+static int fec_enet_nway_reset(struct net_device *dev)
+{
+        struct fec_enet_private *fep = netdev_priv(dev);
+        struct phy_device *phydev = fep->phy_dev;
+
+        if (!phydev)
+                return -ENODEV;
+
+        return genphy_restart_aneg(phydev);
+}
+
 static const struct ethtool_ops fec_enet_ethtool_ops = {
         .get_pauseparam         = fec_enet_get_pauseparam,
         .set_pauseparam         = fec_enet_set_pauseparam,
@@ -1443,6 +1454,7 @@ static const struct ethtool_ops fec_enet_ethtool_ops = {
         .get_drvinfo            = fec_enet_get_drvinfo,
         .get_link               = ethtool_op_get_link,
         .get_ts_info            = fec_enet_get_ts_info,
+        .nway_reset             = fec_enet_nway_reset,
 };
 
 static int fec_enet_ioctl(struct net_device *ndev, struct ifreq *rq, int cmd)